Evaluation of Ignition Metrics with xRage

There have been several metrics designed to track progress toward, and assess the proximity to, reaching thermonuclear ignition for ice layered inertial confinement fusion target designs. Most metrics use zero dimensional evaluations that examine the power balance between mechanisms that both heat and cool the central DT gas throughout a defined confinement time. These metrics are then compared with 1D radiation hydrodynamics codes to benchmark their ability to capture the ignition point. As a result, the 0D models are grounded by simulations. Two questions often arise in this work. The first is, "what is the definition of ignition?" The second is," are the results code dependent?" While one might expect different codes to produce similar results, variations of order 5-10% would not be surprising. This would have a significant effect on the required driver energy to drive a robust ignition target. All of the present work utilized codes that use Lagrangian computational methods. In this work, we cross check past results with the Eulerian adaptive mesh refinement radiation hydrodynamics code xRage and discuss the definition of ignition.